carbon monoxide in tetrahydrofuran byproducts: Pd(CO)(m)(dpe)n; Addn. of CO (ambient pressure) to metal complex (THF, room temp.), stirring (2 h),; trap-to-trap distn., GLC anal.;

in further solvent(s) Thermolysis (120°C) of starting complex (diphenylmethane, vac.).; GLC.;